Widely proven in scientific research Maxicrop's pure liquid Original Seaweed Extract stimulates germination, rooting & establishment from seed to mature plant. Original Seaweed Extract improves natural plant health & the ability to withstand environmental stress. Maxicrop Original Seaweed Extract is ideal for flowers, shrubs, trees, fruit & vegetables in the home, garden or allotment. Soil Association approved for organic growing. Available as 500ml, 1 litre, 2.5 litre & 10 litre bottles.